If only. 48 drivers stood down, 10 services cancelled:It's all moot point anyway. Fair work ruled that metro's training was adequate.
If the drivers want to present themselves as professional, the professional thing to do would have been to raise this issue not when the lines are due to reopen early disrupting their summer holiday plans, nor even when the lines were closed for works a month ago, but a year or 18 months ago when the plans were announced. Otherwise, if they are not professionals, follow the instructions from those who are.